Ordering Information appears at end of data sheet.

19-7454; Rev 1; 3/16

General Description

The MAX17651 ultra-low quiescent current, high-voltage

linear regulator is ideal for use in industrial and battery-

operated systems. The device operates from a 4V to 60V

input voltage, delivers up to 100mA of load current, and

consumes only 8μA of quiescent current at no load. The

device consumes only 0.9μA current when in shutdown.

Output voltage is adjustable in the 0.6V to 59V voltage

range. Feedback voltage accuracy is ±2% over temperature.

An open-drain, active-low PGOOD pin provides a power-

good signal to the system upon achieving successful

regulation of the output voltage. The device also incorporates

an enable pin (EN) that allows the user to turn the part

on or off. The device has a thermal shutdown feature that

shuts down the part when the die temperature exceeds

165°C. The MAX17651 operates over the -40°C to

+125°C industrial temperature range and is available in a

6 lead, compact TSOT package.

Applications

● Low-Current Industrial Power Supplies

● Battery-Powered Equipment

● Post Regulator for Switching Power Supplies

● Utility Meters

● Remote Sensors

Benefits and Features

● Extremely Easy to Use

• Only 4 External Components Required

• Stable with Tiny 4.7μF, 0805 Output Capacitor

• All Ceramic Capacitors, Compact Layout

● Reduces Number of Linear Regulators to Stock

• Wide 4V to 60V Input Voltage Range

• Adjustable 0.6V to 59V Output

• Up to 100mA Load Current Capability

● Operates Reliably in Adverse Industrial Environments

• Built-In Output Voltage Monitoring with PGOOD Pin

• High-Voltage ENABLE Input

• Low 8μA Quiescent Current

• Low Dropout Voltage of 300mV at 100mA

• Overload Protection

• Overtemperature Protection

• -40°C to +125°C Operation

R1

432kΩ

5V

R2

59kΩ

4.7µF

PGOOD

OUT

FB

0.1µF

EN

IN

GND

5.5V TO 60V

MAX17651

Application Circuit for 5V Output

MAX17651

60V, 100mA, Ultra-Low Quiescent Current,

Linear Regulator